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elena55 [62]
3 years ago
7

Which of these gaseous elements is LEAST reactive?

Chemistry
2 answers:
Natali [406]3 years ago
6 0

Answer:

helium

Explanation:

it has 8 valence electrons which fills its outer energy level making it have a stable arrangement of electrons hence least reactive

mamaluj [8]3 years ago
5 0
The correct answer is helium
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3 years ago
Why did the french became allies with the american?
Rus_ich [418]

Answer:

It’s to gain territory

Because they wanted more territory than what they already had.

8 0
3 years ago
One problem with using pesticides to control insects on crops is that the insects can develop resistance to the chemicals. How i
USPshnik [31]

Answer:

Explanation:

Overuse of antibiotics leads to bacteria's resistance against our drugs. This is increasing at an alarming rate and the reason is that overuse of antibiotics kills bacteria that lack the "resistance" gene or gene that can help them survive the antibiotics (similar is the case for insects that die to insecticides). But, some bacteria can have random mutations in their gene that can help them survive the antibiotic (similar is the case for some insects that can survive the insecticide), thus the surviving bacteria give rise to next generation of bacteria that are resistant to the given antibiotic (similar to how insects that survive the insecticide give birth to new insects that are resistant to insecticide too). Soon, every generation adds new antibiotic resistant bacteria (or new insecticide resistant insects in the case of insects) which is dangerous for all of life on this planet. Therefore, both are similar in the sense that new generations of these organisms will be resistant to our weapons against them.

3 0
3 years ago
PLEASE HELP!!!!!!!
butalik [34]

1. yes

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3. 29

4. 1.6

8 0
3 years ago
Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X.The enthalpy of formation of MX is ΔH
Studentka2010 [4]
Here are the given:
<span>ΔHf° = –423 kJ/mol
</span> ΔHsub = 119 kJ/mol
IE = 469 kJ/mol
ΔHEA = –301 kJ/mol
BE = 161 kJ/mol

The lattice energy of the compound is solved using the formula:
U = <span>ΔHf° - </span>ΔHsub - BE - IE - ΔHEA
U = -423 - 119 - 161 - 469 - (-301)
U = -871 kJ/mol

Therefore, the lattice energy is 871 kJ/mol (released).
7 0
3 years ago
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